So you're going to do a science fair project. Great! Your work could be chosen as an entry in your school fair and even in regional, state, or national competitions. As a participant in any science fair, you'll get to show off your work and possibly receive achievement awards. But most important, you'll also learn a lot about science by observing and sharing with other science fair participants.

The introduction is a statement of your purpose, along with background information that led you to make this study. It should contain a brief statement of your hypothesis based on your research. In other words, it should state what information or knowledge you had that led you to hypothesize the answer to the project's problem question.

List each project experiment in the experiment section of the report. Experiments should include the problem of the experiment, followed first by a list of the materials used and the amount of each, then by the procedural steps in outline or paragraph form.  Following each experiment, include all the measurements you took and all the observations you made during each experiment. Graphs, tables, and charts created from your data should be labeled and, if possible, colorful.

The conclusion summarizes, in about one page or less, what you discovered based on your experimental results.  The conclusion states the hypothesis and indicates whether the data supports it. The conclusion can also include a brief description of plans for exploring ideas for future experiments.

Your science fair display represents all the work that you have done. It should consist of a backboard, the project report, and anything that represents your project, such as models made, items studied, photographs, surveys, and the like. It must tell the story of the project in such a way that it attracts and holds the interest of the viewer. It has to be thorough, but not too crowded, so keep it simple.

An Example Display (From Janice VanCleave's Guide to the Best Science Fair Projects)